html,body{margin:0px;height:100%;font-size:12px;}

#container {margin:0 auto; width:1000px;}
#header { height:100px; background:#6cf; margin-bottom:5px;}
#headmenu { height:30px; background:#09c; margin-bottom:5px;padding-top:10px;}
#mainContent { margin:0 auto;height:100%; }
#leftmenu { margin:0 auto;float:left; width:200px; height:868px; background:#9ff;}
#rightmain { margin:0 auto;float:right; width:795px; height:868px; background:#cff;}/*因为是固定宽度，采用左右浮动方法可有效避免ie 3像素bug*/
